Man page - fccachecopyset(3)
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Manual
FcCacheCopySet
NAMESYNOPSIS
DESCRIPTION
NAME
FcCacheCopySet - Returns a copy of the fontset from cache
SYNOPSIS
#include <fontconfig/fontconfig.h>
FcFontSet * FcCacheCopySet (const FcCache * cache );
DESCRIPTION
The returned fontset contains each of the font patterns from cache . This fontset may be modified, but the patterns from the cache are read-only.